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Finding the Fourth Proportional to 261,966.90, 392,950.35 and 64,974.90

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Solution

The fourth proportional to 261,966.90, 392,950.35 and 64,974.90 is: 97,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,966.90 : 392,950.35 = 64,974.90 : x
  2. Step 2: Convert to fraction form
    261,966.90/392,950.35 = 64,974.90/x
  3. Step 3: Cross multiply
    261,966.90x = 392,950.35 × 64,974.90
  4. Step 4: Simplify right side
    261,966.90x = 25,531,909,696.22
  5. Step 5: Solve for x
    x = 25,531,909,696.22/261,966.90
  6. Step 6: Final answer
    x = 97,462.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.